Global B — also known as the Vehicle Intelligence Platform (VIP) — is GM’s second-generation electrical architecture, introduced beginning approximately 2020 and rolled out across the lineup through 2022. Global B replaces Global A and represents a fundamental change in how GM vehicles handle module communication, security, and updates.
Key Global B characteristics:
- High-speed CAN-FD networks (29-bit, up to 5 Mbit/s) replace Global A’s mix of GMLAN and standard CAN
- Centralized gateway module enforces module-level security and authentication
- Native support for over-the-air (OTA) software updates
- Modules must be “married” to the vehicle through GM’s Techline Connect online platform
- Replaces the separate MOST bus with Ethernet-based audio/video transport
Because Global B requires Techline Connect for module marriage, retrofits and replacements on Global B vehicles are more complex than Global A. WAMS coordinates the Techline Connect step as part of every Global B module shipment, either by pre-marrying the module before shipping or by performing the marriage remotely via WAMS2U.
Global B vehicles include Cadillac CT4, CT5, XT4 (2020+), 2021+ Tahoe/Suburban/Yukon/Escalade, 2022.5+ Silverado/Sierra 1500 refresh, Corvette C8, and most 2022+ GM vehicles. GM has announced the Centralized Computing Platform as the successor to Global B, launching first on the 2028 Cadillac Escalade IQ.
For year-by-year identification, see the WAMS Global A vs. Global B Guide.